Mandible guard



FIG. 1 is a top, front, right side perspective view of a mandible guardshowing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the mandible guard that form nopart of the claimed design.

CLAIM The ornamental design for a mandible guard, as shown anddescribed.